Drag induced lift in granular media

Details Drag induced lift in granular media Drag induced lift in granular media

2010-11-17

arxiv.org/abs/1011.3861v2

Phys. Rev. Lett. 106, 028001 (2011)

Physics

Condensed Matter

Soft Condensed Matter

5 pages, 5 figures

Scientific paper

10.1103/PhysRevLett.106.028001

Laboratory experiments and numerical simulation reveal that a submerged intruder dragged horizontally at constant velocity within a granular medium experiences a lift force whose sign and magnitude depend on the intruder shape. Comparing the stress on a flat plate at varied inclination angle with the local surface stress on the intruders at regions with the same orientation demonstrates that intruder lift forces are well approximated as the sum of contributions from flat-plate elements. The plate stress is deduced from the force balance on the flowing media near the plate.

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